Number Names

A rare name that would be fitting for a youngest child.

Soner

Pretty, zippy and almost unknown, this Italian name would suit a third child.

Terza

Number names are cooler than ever and Thirteen is the newest addition, introduced by Kourtney Kardashian and Travis Barker. They named their son Rocky Thirteen, inspired by Travis' favorite number and Rocky's position as the 13th Kardashian grandchild.
 
The number 13 has long been the subject of superstition, supposedly arising from the discrepancy in months between the lunar and solar calendars. The solar calendar contains about 12.41 lunar cycles and the period between the last full moon of one year and the first of another is considered unlucky.

Thirteen

Unlucky number thirteen is now an edgy baby name option thanks to Kourtney Kardashian and Travis Barker, who named their son Rocky Thirteen. They chose his one-of-a-kind middle name because "13 is just the greatest number of all time," according to Barker. Rocky is also the 13th Kardashian grandchild.
 
Many cultures around the world consider the number 13 to be bad luck. The dominant theory is that this arose because a calendar year contains slightly more than 12 lunar cycles, and that the time between the 12th and 13th full moons was particularly ominous.

This unusual surname name has been made famous by Pretty Little Liars actress Troian Bellisario. Troian is a family name on her father's maternal side, possibly meaning "of Troy", but more likely deriving from a Slavic name meaning "triad; trinity".

Troian

This quirky British nickname-turned- real-name is most famously borne by English actress
Tuppence Middleton, who was named for her mother Tina’s childhood nickname. There is also a
British literary namesake in Agatha Christie’s fictional detective Tuppence Beresford, whose real
name is Prudence. 
The word "tuppence" is a colloquial term for either the pre-decimal twopence coin, or a 2p coin in
modern decimal coinage. It is also found in several British idioms to signify something of little
worth, e.g. "I don’t care tuppence" (= not at all) or "to give one’s tuppence worth" (= put in one’s two
cents).

Tuppence

Twain can be thought of as a modernization (and possible namesake) of the dated Wayne, seasoned with the humor of Mark Twain, who adopted it from a river term.


Twain

The author Roald Dahl named his oldest daughter Olivia Twenty, after a $20 bill he had in his pocket, and her birthday on April 20.

Twenty

An uncommon Latin and Italian name which would make a fitting choice for a final baby – but be aware that many would associate it with the cosmetics brand or the Ultimo brand of lingerie. 

Ultima

A French variant of the ancient Latin Sixtus, a name whose meaning can be interpreted as "scraped, polished" from the Latin Xystos, or, perhaps more intuitively now, from the Latin sextus meaning "sixth". A rare option, it has appeared in the French charts only twice: once in 1904 and again in 1940.
 
Sixte may also be considered a word name, used to describe one of the eight basic positions in fencing in which the sword hand is held at chest heigh and the end of the sword at eyelevel. In this case, it is pronounced more like sikst than the French seekst.

Sixte

Veronica Roth used the name Four for a character in her novel Divergent.

Four

Number names have been used since ancient times — think Roman names like Quintus and Octavia — and are still being re-invented in today. 

 (including "last"), and a few false friends that sound like they *should* be number names, like Quinn and Sixten. Beyonce and Jay-Z famously gave their oldest daughter the middle name Ivy to stand for the Roman numerals IV, representing their lucky number four.

The number names for babies here are listed by current popularity on Nameberry.

Number Names for Babies, with names for boys and girls that are numbers or represent numbers, numerals, or mathematics, with meanings, origins, and popularity. (Page 6)

Names with Number Meanings